Piling construction



May 17, 1932 J. l.. DE vou FILING CONSTRUCTION Filed July 23. 1950 4 .Sheets-Sheet l lmenfor:

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PILING CONSTRUCTION Fl'ed July 23, 1930 4 Sheets-Sheet 4 Patented May 17, 1932 UNITED STATES JAMES If. DE VOU, F PITTSBURGH, PENNSYLVANIA PILING- CONSTRUCTION Application led .Tuly 23,

This invention relates to false work structure for bridges and the like, and more particularl to steel pile bents and has for one of its olijects the provision of a novel form of steel pile which is formed primarily from standard rolled metal shapes.

Another object is to provide a novel form of pile which can be driven into rock so as to provide a strong support that will withstand severe shocks during floods and other extreme conditions.

A further object is to provide a steel bent unit having a materially greater strength than the bent units heretofore in general use, thereby providing supports which may be spaced a greater distance apart so as to provide a wide waterway. between the bents.

A still further object is to provide a novel form of adjustable diagonal bracing for the i lower portion of the pile bent structure.

The steel pile bent construction of this invention has many advantages over the prior art. The structure is such that its life is substantially everlasting if kept painted; it cannot be damaged by floods, ice,

drift, boats or barges, and therefore work can be carried on in rivers during the whole year without danger of losing the spans before they are completed, and the piles may be driven into a rock bottom and are safe' even when the silty river bottom is washed out by oods. Many other advantages, too numerous to set forth in detail, will be apparent to those skilled in the art.

In the drawings:

Figure l is a side elevation of a steel pile bent unit constructed in accordance with this invention.

Figure 2 is an end elevation showing two of the bents in position.

Figure 3 is an enlarged side elevation of one of the piles.

Figure 4 is a similar view taken at right angles to Figure 3.

Figure 5 is a transverse sectional view taken on the line V-V of Figure 4.

Figure 6 is a perspective view of the point member of the pile.

Figures 7, 8 and 9 are transverse fragmentary sections taken one the lines VIL-VH,

1930. Serial No. 470,125.

VIII-VIII, and IX-IX, respectively, of Figure 1.

Figure 10 is an enlarged detail of one of the ratchet take-up devices for tensioning the cable truss members.

Referring more particularly to the draw ings, the letter A designates the steel pile bent as a whole, which is composed of a plurality of steel piles B, having their points driven into the permanent river bottom and being stiii'ened and held in spaced relation by a pile framing 2 composed of standard rolled metal shapes mounted intermediate the ends of the series or group of piles comprising one bent.

The upper ends of the piles B are provided with brackets 3 which support cap beams 4. False work Stringer beams 5 are mounted on the cap beams 4 and extend from bent to bent. The false work beams or stringers 5 are provided with angle clips 6 which engage the cap beams and prevent shifting of the stringers.

Suitable blocking beams 7 are mounted on the false work stringers 5, and the bridge truss 8 is supported on said blocking beams.

The piles B are supported below the pile framing 2 by exible diagonal bracing members 9 which are adjustable.

Each of the pilesB is provided with a point casting 10 secured to its lower end to :facilitate the driving of the piles into the river bottom. The point castings l0 are provided with cored holes l2 in which the lower ends of lengths of cable forming the diagonal members 9 are secured.l The members 9 are trained diagonally upward and are secured to the end pile farthest from the pile to which their lower ends are secured at a point 9a above the water level. In the type of pile bent shown, six piles are used, three of the members being arranged diagonally in, one direction and three in the other direction.

In the particular construction shown a second set of flexible diagonals 14 are provided which have their lower ends secured to the piles intermediate their lower ends and the ,bottom of the framing 2. The diagonals 14 are arranged sothat their upper ends terminate at a proximately the same point as the diagona s 9.

Each of the diavonals 9 and 14 is provided with a ratchet ta e-up device 15 by which their tension may be adjusted.

The diagonale 9 and 14 are adapted to be secured to the piles before they are driven into the river and to be tensioned when the silt bottom goes out ,during a iood,-thereby adding materially to the rigidity of the structure. l

The piles B are of particularly novel design and comprise one \or more lengths of standard, heavy rolled H-beam sections 16. The lower end of each pile is stifened trom its lower end upwardly for an appreciable distance by means of pairs of angle stie n ing members 17 which are mounted in pairs on the opposite sides of the web of the eam member 16. The members 17 are arranged back-to-back and are riveted to ether and to the web of the beam 16. The H- eam sections of each pile are spliced in the ield by plates 16B. These splices may be quickly made without materially interfering with the pile driving operations. The plates 16B may be either welded, riveted or bolted in position, or a combination of such attaching means may be used.

The pile point castings 10 comprise a pointed bod portion having a Hat upper face 18 provide with four upstanding angleshaped legs 19 which extend upwardly between the lian es of said beam section and to the backs 0% said stiffening members 17, as at 19".

Side plate members 20 are mounted between the fianges of the H-beam section 16 on each side of the web to form a swelledor box-like portion, giving the pile the ability to force the ground apart when it is driven and so develop skin friction which gives it additional supporting power over a plain H-section.

The side plates 2O extend upwardly ad- 'acent the outer edges of the beam flanges from the lower end of the beam sectionI 16 to a point materially above the stiffening members 17 and preferably to such a point that they will extend above the river bottom in which the piles are driven. The upper ends of the plates 20 are bent inwardly, as at 20, so that their upper ends contact with the web of the beam 16, thereby closing the upper end of the box-like portion of the pile.

The side plates 20 have their lower ends secured'to the top face of the point 10, their side edges secured to the flanges of the beam section 16, and their upper ends secured to the web of the beam section 16 by line welds 22, thereby forming water-tight joints.

Piles like that described above are particularly adapted for use in bridge work where the piles must be driven into a rock bottom since their great strength and the penetrating ter t e rock.

While l have shown and described one speciic embodiment of my invention it will be understood that T; do not wish to be limited thereto since various modifications may be made in the bent assembly and the pile structure without de arting from the scope o my invention, as ened in the appended claims l claim:

1. A steel pile for use in erecting brid es and the like comprising a length of rolle metal H-beam section having a point at its lower end, side lates extending upwardly from the lower en of said H-beam section a material distance, the distance said plates extend upwardly along said pile being at least equal to the distance saidv ile is to be driven into the earth, said side `ates being arranged between the flanges o said H-beam section adjacent the outer edges thereof and having plower of the points 10 permit them to entheir upper ends bent inwardly into Contact i with the web of said tri-beam section, and said plates being secured to said lei-beam section by line welds forming water-tight connections.

y 2. A steel pile for use in erecting brid es and the like comprising a length of rol ed metal iti-beam section having a. point at its lower end, stifening means extending from the lower end of said H-beani section u wardly for an appreciable distance, si e plates extending upwardly from the lower end of said H-beam section a material distance, the distance said plates extend upwardly along said pile being atleast equal to the distance said pile is to be driven into the earth, said side lates being arranged between the flanges ci) said H-beam section adjacent the outer edges thereof and having their upper ends bent inwardly into contact with the web of said H-beam sectionfand said plates being secured to said H-beam section by line welds forming water-tight connections.

3. A steel pile bent construction comprising, in combination, a plurality of rolled metal H-beam piles having their lower ends provided with cast steel points rigidly connected thereto, pile framingl arranged intermediate the ends of said piles for maintaining the piles in spaced relation and for 4stiiening the structure, said points of said piles being provided with holes, cables having their lower ends secured in the holes in the points of said respective piles, said cables being trained diagonally upward and having their upper ends connected to a point above the water level on the end pile farthest from the pile to which their lower ends are connected forming iexible diagonal bracing, other cables having their lower ends connected to said respective piles at points intermediate the lower ends of said piles and the bottom of said pile framing, said last named cables being trained diagonally upward and having their upper ends connected to a point above the water level on the end pile farthest from the pile to which their lower ends are connected 4itorming other exible diagonal bracing, and means for adjusting the tension of all of said cables. v

4.' ln a steel pile structure, a body portion comprising a length of rolled metal H-beam section, a pair of an le stiHening members arranged back to bac on each side of the web of said H-beam section, said stiffening members extending from the lower end of said H-beam section upwardly a material distance and beingl secured together and to the web of said H-beam section and side plates arranged between the ianges of said H-beam section and extending from the lower end of said beam upwardly to a point materially above the upper ends of said stifl'ening memn bers and having their upper ends bent inwardly into engagement with the web of said H-beam section, said plates being secured to said anges and said web of said H-beam section by continuous line welds to form water-tight joints.

In testimony whereof, I have hereunto set my hand.

JAMES L. DE VOU. 

